Turbulent mixing in swirling flow
Name
06548380.pdf
Size
5.57 MB
Format
Adobe PDF
Checksum (MD5)
659dfa9e274f9ebaa976ca146d2cade1
Author(s)
Cheng, Wai Kong
Date Issued
1978
Publisher
Cambridge, Mass. : Massachusetts Institute of Technology, Gas Turbine & Plasma Dynamics Laboratory, [1978]
Series/Report no.
GT & PDL report ; no. 143
Abstract
The effect of swirl on the mixing of two gas streams of the same density in coaxial annular geometry has been examined. The flow is studied via a fluorescent tracer, 2-3 biacetyl. Through direct excitation, collisional excitation, and collisional de-excitation of the tracer, the turbulent transport, molecularly mixed and unmixed regions in the flow are visualized. A three dimensional structure flattened in the azimuthal direction is observed. It is suggested that this structure is the result of the growth of the unstable azimuthal modes as limited by a turbulent eddy viscosity.
Description
September 1978
Originally presented as the author's thesis, Sc. D. in the M.I.T. Dept. of Aeronautics and Astronautics, 1979
Includes bibliographical references (leaf 49)
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